Enermax DIGIFANLESS 80 Plus Platinum Full Modular 550W World 1st Digitally Controlled Fanless and 0 dba Soundless Operation Power Supply, EDF550AWN 90 PLUS ready! Worlds 1st digitally controlled fanless PSU with an 80 PLUS Platinum certification. Fanless and full power @ 40C; Fanless design creates a 0 dBA soundless operation for home theater/noise sensitive systems with a full power output @ 40C/104F ambient Advance ZDPMS digital controlling provides real time power supply status and allows for configurations such as output voltage, protection, 12V rails qty. Individual Sleeved Cable; Full modular cabling design with individual sleeved wiring for flexible and refined cable management 100% 105C Japanese electrolytic capacitors; Copper-Bridge Array Transmission; 2013 ErP Lot 6 ready!; DC to DC Technology; CordGuard; SafeGuard